package cn.tedu;

import java.sql.*;

public class Demo03 {
    public static void main(String[] args) throws SQLException {
        Connection conn = DriverManager.getConnection(
                "jdbc:mysql://localhost:3306/empdb?characterEncoding=utf8&serverTimezone=Asia/Shanghai&useSSL=false","root","root");
        System.out.println(""+conn);
        Statement s = conn.createStatement();
        //s.executeUpdate("insert into emp(name) values('Tom')");
        //s.executeUpdate("update emp set name='Jerry' where name='Tom'");
        //s.executeUpdate("delete from emp where name='Jerry' ");

        ResultSet rs = s.executeQuery("select name,sal from emp");
        while (rs.next()){
            //String name = rs.getString("name");
            //double sal = rs.getDouble("sal");

            String name = rs.getString(1);
            double sal = rs.getDouble(2);

            System.out.println(name+":"+sal);
        }

        conn.close();
        System.out.println("执行完成");
    }
}
